需求的场景描述
...
CD0025 签名不正确 已对文档反复调试,未发现原因
支付请求参数
alipay_url: "app_id=2021001140645554&biz_content=%7B%22product_code%22%3A%22QUICK_MSECURITY_PAY%22%2C%22total_amount%22%3A0.1%2C%22subject%22%3A%22order%22%2C%22out_trade_no%22%3A%22100070%22%7D&charset=utf-8&format=json&method=alipay.trade.app.pay&notify_url=http%3A%2F%2Fdomain.merchant.com%2Fpayment_notify&sign=Gh5KHaTsLhGwozIJL0oZrdPjErOnuPIrt%2FytbTPkFnAFHodc0VQGYIC2je54z%2BJbjlkj4T6%2FjVTNzKZlng6n1lyYt2eyHALMMP8Iexcay2NOcKjMRCZbNjh07kI60Zxg6elYKeThjFnxGOoS9fBg3Ya5Z%2FZeh2EDo3J5V5uLSgdd4MUIHgcxGeto49Ka5CBcCdYfsVbBAvJKuAiSVDl5tdJvL9y%2FdaFpZL9i5GCPy8FR8%2F0BJrhXgYsuYc%2B7%2FF6pMUJW64MBWvNbFedYHuPmpfRly8AXwoj4Q6QaXZIUgRIMlkiytnT3wqhg%2FTCLER4%2Bsm6OGw1NDY28Ct%2FkxB4s2g%3D%3D&sign_type=RSA2&timestamp=2020-03-09+22%3A26%3A29&version=1.0"
app_id: "tt31944729aebe218a"
body: "order"
currency: "CNY"
merchant_id: "1900013870"
notify_url: "https://cp.xxxyin.cn/api/index/notify_url"
out_order_no: "100070"
payment_type: "direct"
product_code: "pay"
risk_info: "{"ip":"123.144.60.66"}"
sign: "14251cab2c3c60fd3323c1b3c5abbe38"
sign_type: "MD5"
subject: "order"
timestamp: 1583763989
total_amount: 0
trade_time: 1583763989
trade_type: "H5"
uid: "yf8Gm1bY2gX8i-Rb"
valid_time: "300"
version: "2.0"
wx_type: "MWEB"
wx_url: "https://wx.tenpay.com/"
希望提供的能力
...
帮忙给出问题所在